PRINCIPLES OF NAVAL ENGINEERING 



ADJUSTING SCREW 



LOCK NUT 

 ADJUSTING SPRING 



DIAPHRAGM DISK 

 (UPPER MUSHROOM) 



UPPER DIAPHRAGM 



ACTUATING LINE FROM 



DISCHARGE SIDE 



OF PUMP 



INTERMEDIATE DIAPHRAGM 

 CROSSHEAD CONNECTING ROD^^ 



DIAPHRAGM STEM CAP 

 (INTERMEDIATE MUSHROOM) 



LOWER DIAPHRAGM 



CYLINDER LINER __ 

 OPERATING PISTON 



HANDWHEEL 



MAIN VALVE SPRING 



STEAM CHAMBER 



STEAM INLET ^_^ 



MAIN VALVE — ^^^SS^^^t^ 



NEEDLE VALVE 



DIAPHRAGM STEM 

 (LOWER MUSHROOM) 



DIAPHRAGM STEM GUIDE 



CONTROLLING VALVE BUSHING 

 CONTROLLING VALVE 

 CONTROLLING VALVE SPRING 



STEAM OUTLET 

 (TO TURBINE) 



STEM (FOR BYPASS) 



INDICATOR PLATE 

 HANDWHEEL (FOR BYPASS) 



Figure 16-10.— Constant-pressure pump governor for main feed pump. 



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